Mr. Jui-Hsiung Yen served as our general manager from 1996 to 2008 and has served as our chiarman since September, 2008.  He again has served as our gereral manager since  September, 2015.  He also serves of the chairman of Suzhou Tongyu Machine Tool Co.,Ltd, Asia Pacific Elite Corp., Tong Fong Automation Co.,Ltd., PCI-SCEMM, Contrel Technology Co., Ltd., F.S.E Corporation and Ever Lumin Incorporation, respectively and the director of Yeou Sheng Machine Co., Ltd. and Cyber laser Taiwan Co., Ltd. (representative of Contrel Technology Co., Ltd. ).   Mr. Jui-Hsiung Yen formerly served as the chairman of The Allied Association For Science Park Industries and serves as the chairman of Taiwan Machine Tool & Accessory Builders’ Association, the chairman of Precision Machinery Research & Development Center and the director of Taiwan Aerospace Industry Association.  He holds a bachelor's degree in power mechanical engineering from National Chung Cheng University.

Mr. Feng-Hui Chiou serves as general manager of Suzhou Tongyu Machine Tool Co.,Ltd.  He formerly served as our sales manager and vice general manager of Suzhou Tongyu Machine Tool Co.,Ltd.  Mr. Feng-Hui Chiou graduated from Department of Mechanical Engineering, Nanya Institute of Technology.